Improvement in oil ok suet-oup



ROBERT ROSS, OF BETHLEHEM, PENNSYLVANIA;

Letters Patent No. 81,542, dated August 25, 1868.

IMPRUVEMENTINOIL 0R SUET-GUP. 1

we seam rrfemh in in these iettcrs intent mm mating and at flge smite.

TO ALL .WHOM. IT MAY CONCERN:

Be it known that I, ROBERT Ross, of Bethlehem, Northampton county,Pennsylvania, have invented an Improved Oil or Snot-Cup; and I do herebydeclare the following to be a full, clear, and exadt description of thesame.

My invention relates to an improvement in that class g t' oil orsuet-cups which are used for lubricating cylinders, steam-"chests, andother parts of a steam-engine; and it consists, firstly, of a yoke orframe hinged to the upper portion of the cup, and provided with ascrew-rod, arranged to hold a valve-spindle in its seat against apressure of steam, as fully described hereafter} and my inventionconsists, secondly, of avalve-spindle ground to a seat, and to a passagein the upper portion of the cup, so as to prevent the escape of steambetween the second spindle and the passage and seat.

In order to enable others skilled in the art to make and use myinvention, I will now proceed to describe its construction andoperation, reference being had to the accompanying drawing, which formsa part of this specification, and in which- Figure 1 is a verticalsection of my improved oil or suet-cup.

Figure 2, the same, with the parts turned to a different position.

Figure 3, a verticalsection on'the line 1-2, fig. 2, showing one of theparts detached, and

Figure 4 a plan view'of fig. 3. I

Similar lettersrci'er to similar parts throughout the several views.

A represents the oil-reservoir, and B the mouth of the cup,communicating with the said reservoir through a passage, a, fig. 3. To aprojection, b, beneath the reservoir, is screwed a hollow branch, 0, bymeans of which the cup is secured to the cylinder, steam-chest, or otherpart of an engine which requires lubrication.

The upper .end, (Z, of the hollow branch projects into the reservoir,and has internal threads corresponding with the threads of ascrew-valve, D, the latter being reduced in diameter below its thread,so as to form an annular space, f, in the projection 01. Holes e form acommunication between this annular spacc and the interior of thereservoir A. r

The lower cone-shaped end of thescrew-valve D is grooved to a seat, '0,in the hollow branch, and its upper end is made square, and adapted to asimilarly-shaped opening in. the lower end of a spindle, F. The latterpasses through, and is ground to, but so as to turn freely in,thopassage a, and on that portion .of thespindle within the cup B is anannular projection, it, which forms a valve ground to a seat, It, at thebottom of the said cup, (see fig. 3.) v I i The valve-spindle F isprovided with asuitable handle, 2', by means of which it may be turned,and against its'uppcr end iscaused to bear (under the circumstancesdescribed hereafterla screw-rod, Gr, having a handwheel, j, and passing'through and adapted to internal threads cut in a yoke or frame, IL Thelatter consists of the cross-piece It, through which the rod G'passcs,and which is connected to links Z Z, the lower ends of the latter beingarranged to turn on trunnions or pins'm projecting from opposite sidesof the cup 13.

' When the reservoir A is to be filled with oil or suet, tlfe handle iand its spindle F are turned to a limited extent, in order to close thescrew-valve upon its seat a, and thereby prevent the admission of steaminto the reservoir. The screwrod G is then turned and raised by means ofits hand-wh cel, until its lower end is clear of the valve-spindle F,after whichtheyokc II is turned laterally upon the pins on to theposition shown in figs. 3 and 4, and the ralve-spindleis raised from itsseat and from the passage a, the lubricating-material beingthenintroduced into the reservoir through the cup 13 and through thesaid passage.

After filling the reservoir, the. parts described as having been movedor detached, are restored to their original position, and the handle 2'is turned until the screw-valve D is raised from its seat, andcommunication opened betweenthe interior of the branch 0 and thereservoir. Steam then enters the reservoir, and displaces aportion ofthe oil or suet, which passes through the openings into the annularspace f, and thence through the hollow branch to the portion of theengine to be lubricated.

But for the screw-rod G, the pressure of steam within the reservoirwould raise the valve-spindle F from its seat. By means of the'saidscrew-rod, however, thcvvalve-spindlc is held down, and the escape ofsteam prevented. It should be understood, however, that this pressure ofthe screw-rod upon the valve-spindle is not suflicient to prevent theletter from being freely turned by means of its handle 2'.

The valve-spindle F is, as before described, ground to the passage a, sothat, even if it should be raised slightly above its seat It, no steamcould escape between it and thepassagc.

As the screw-valve D is operated directly by turning the valve-spindleF, it can he raised from itsseat to a greater orless extent, asrequired, and thejsupply of lubricating-material through the branch 0regulated to a nicety.

My improved cup issimple inconstruction and arrangement of its parts,and is not liable to get out of order, while the oumbrous'and expensivecocks and springs, (uncertain in their action,) which are usuallyemployed in connection with this class of lubricators, are dispensedwith.

I claim as my invention, and desire to secure by Letters Patent Anoil-cup, constructed and operating as herein set forth.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses.

ROBERT ROSS.

Witnesses Ronnnrr WRIGHT, Fnlmors CASSIDY.

